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DOS疑难解答 & 问题讨论（解答室） » How to make the default input for xcopy c:\txt d:\txt /d /u /p be N

Floor1　windbamboo	Posted 2007-03-21 00:51
新手上路　Posts 3　Credits 8
I tried echo N\|xcopy c:\txt d:\txt /d /u /p But the result shown was as follows: C:\Documents and Settings\Dell>echo N\|xcopy c:\txt d:\txt /d /u /p C:\txt\1.txt (Y/N)? N C:\txt\15204.txt (Y/N)? C:\txt\15204.txt (Y/N)? C:\txt\15204.txt (Y/N)? C:\txt\15204.txt (Y/N)? C:\txt\21195.txt (Y/N)? 0 File(s) copied Why did it turn out like this?

Floor2　Michael	Posted 2007-03-22 02:20
钻石会员　Posts 3,041　Credits 10,056
Because what echo N sends is not just the keyboard scan code for N. You can solve it with for ......... exist................, or write a binary file whose contents are all 4e, then use < to redirect it to xcopy's input.

Floor3　windbamboo	Posted 2007-03-23 00:51
新手上路　Posts 3　Credits 8
Thanks to Michael for the helpful explanation, I basically understand the reason now, and I'm currently thinking of a way to solve it. Thanks again!

Floor4　Wengier	Posted 2007-03-23 14:32
系统支持　Posts 10,521　Credits 27,736
You can have a look here. I've already proposed adding an /I switch to the CP command, to automatically answer "No", that is, skip files that already exist: http://www.cn-dos.net/forum/viewthread.php?tid=28739&fpage=1

Floor5　itieim	Posted 2007-04-21 07:10
新手上路　Posts 9　Credits 18
How do I suppress the [y\|n] in the sc command?